package com.atguigu.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

@Service
public class PaymentService {
    /**
     * 正常访问
     * @param id
     * @return
     */
//    @HystrixCommand
    public String PaymentInfo_OK(Integer id){
        return  "线程池："+Thread.currentThread().getName()+"   paymentInfo_OK,id：  "+id+"\t"+"哈哈哈"  ;
    }
    //失败
    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler" , commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "5000" )
    })
    public String paymentInfo_TimeOut(Integer id)
    {
//        int age = 10 / 0;
        int timeNumber = 3;
        try
        {
            TimeUnit.SECONDS.sleep(timeNumber);
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
        return "线程池："+Thread.currentThread().getName()+"   paymentInfo_TimeOut,id：  "+id+"\t"+"呜呜呜"+" 耗时(秒)"+timeNumber;
    }

    public String paymentInfo_TimeOutHandler(Integer id )
    {
        return "线程池："+Thread.currentThread().getName()+" 系统忙，运行报错，请稍后再试 "+id+"\t"+"哭了";
    }
    /**
     * 服务熔断
     */
    //服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),  //是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),   //请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"),  //时间范围
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"), //失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id){
        if (id < 0){
            throw new RuntimeException("*****id 不能负数");
        }
        String serialNumber = IdUtil.simpleUUID();

        return Thread.currentThread().getName()+"\t"+"调用成功,流水号："+serialNumber;
    }
    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id){
        return "id 不能负数，请稍候再试,(┬＿┬)/~~     id: " +id;
    }

}
